Complexity should be relative to the material covered.
Verbosity without substance is tiresome. But so is hand-waving and vagueness over complex topics (the hallmark of conspiracy theorists and absolutist fundamentalists).
Providing a rich exposition of a rich topic is indeed a divine sort of thickness.
Spot on. Verbosity for the sake of it sucks, but vague docs on complex systems are even worse. Balance is everything—depth where it actually matters.